package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.github.xiaoymin.knife4j.core.util.StrUtil;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.Assert;
import org.springframework.util.DigestUtils;

import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 分页查询
     *
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public PageResult page(EmployeePageQueryDTO employeePageQueryDTO) {
        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());
        Page<Employee> page = employeeMapper.page(employeePageQueryDTO);
        Long total = page.getTotal();
        List<Employee> records = page.getResult();
        return new PageResult(total, records);
    }

    /**
     * 新增员工
     *
     * @param employeeDTO
     */
    @Override
    public void addEmployee(EmployeeDTO employeeDTO) {
        Assert.isTrue(StrUtil.isNotBlank(employeeDTO.getUsername()), "用户名不能为空");
        Assert.isTrue(StrUtil.isNotBlank(employeeDTO.getName()), "姓名不能为空");
        Assert.isTrue(StrUtil.isNotBlank(employeeDTO.getPhone()), "手机号不能为空");
        Assert.isTrue(StrUtil.isNotBlank(employeeDTO.getSex()), "性别不能为空");
        Assert.isTrue(StrUtil.isNotBlank(employeeDTO.getIdNumber()), "身份证号不能为空");
        Employee  exist = employeeMapper.getByUsername(employeeDTO.getUsername());
        Assert.isNull(exist, "账号已存在");
        Employee employee = Employee.builder()
                .username(employeeDTO.getUsername())
                .name(employeeDTO.getName())
                .phone(employeeDTO.getPhone())
                .sex(employeeDTO.getSex())
                .idNumber(employeeDTO.getIdNumber())
                .status(StatusConstant.ENABLE)
                .password(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()))
                .build();
        employeeMapper.addEmployee(employee);
    }

    /**
     * 根据id查询员工信息
     *
     * @param id
     * @return
     */
    @Override
    public Employee getById(Long id) {
        Assert.notNull(id, "id不能为空");
        return employeeMapper.getById(id);
    }

    /**
     * 修改员工信息
     *
     * @param employeeDTO
     */
    @Override
    public void update(EmployeeDTO employeeDTO) {
        Assert.notNull(employeeDTO.getId(), "id不能为空");
        Employee employee =employeeMapper.getById(employeeDTO.getId());
        //将dto对象属性复制到entity对象中
        BeanUtils.copyProperties(employeeDTO, employee);
        employeeMapper.update(employee);
    }

    /**
     * 修改密码
     *
     * @param passwordEditDTO
     */
    @Override
    public void editPassword(PasswordEditDTO passwordEditDTO) {

    }

    /**
     * 启用禁用员工账号
     *
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        Assert.notNull(status, "状态不能为空");
        Assert.notNull(id, "id不能为空");
      Employee employee=employeeMapper.getById(id);
      Assert.notNull(employee, "待操作员工不存在");
      employee.setStatus(status);
      employeeMapper.update(employee);
    }

}
